<html>
<meta charset="UTF-8">
		<title>Monster</title>
<style type="text/css">
/*css reset */
body,p,div,ol,ul,li,dl,dt,dd,h1,h2,h3,h4,h5,h6,form,input,iframe,nav {
    margin: 0;
    padding: 0;
}
body {
    font: 14px Microsoft YaHei;
} 
a {
    text-decoration: none; 
}
ol,ul {
    list-style: none;
}
.wrapper {
    width: 200px;
    margin: 100px auto;
    position: relative;
} 
.d1,.d2 {
    width: 200px;
    height: 200px;
    background: #f55;
    border-radius: 55%;
    transform: rotate(65deg);
    clip: rect(0px 100px 200px 0px);
    position: absolute;
}
.d1::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: #fff;
    border-radius: 55%;
    top: 64px;
    left: 32px;
}
.d1 {
    -webkit-animation: we .3s ease-in-out infinite alternate;
    animation: we .3s ease-in-out infinite alternate;
}
.d2 {
    transform: rotate(-65deg);
    clip: rect(0px 102px 200px 0px);
    -webkit-animation: we2 .3s ease-in-out infinite alternate;
    animation: we2 .3s ease-in-out infinite alternate;
}
.i1 {
    padding: 5px 10px;
    margin: 30px 0;
}
@-webkit-keyframes we {
    0% {
        transform: rotate(48deg);
    }
    100% {
        transform: rotate(88deg);
    }
}
@keyframes we {
    0% {
        transform: rotate(48deg);
    }
    100% {
        transform: rotate(88deg);
    }
}
@-webkit-keyframes we2 {
    0% {
        transform: rotate(-45deg);
    }
    100% {
        transform: rotate(-93deg);
    }
}
@keyframes we2 {
    0% {
        transform: rotate(-45deg);
    }
    100% {
        transform: rotate(-93deg);
    }
}
</style>
<body>
<div class="wrapper">
    <div class="d1"></div>
    <div class="d2"></div> 
</div>
</body>
</html><html>
<meta charset="UTF-8">
        <title>Monster</title>
<style type="text/css">
/*css reset */
body,p,div,ol,ul,li,dl,dt,dd,h1,h2,h3,h4,h5,h6,form,input,iframe,nav {
    margin: 0;
    padding: 0;
}
body {
    font: 14px Microsoft YaHei;
} 
a {
    text-decoration: none; 
}
ol,ul {
    list-style: none;
}
.wrapper {
    width: 200px;
    margin: 100px auto;
    position: relative;
} 
.d1,.d2 {
    width: 200px;
    height: 200px;
    background: #f55;
    border-radius: 55%;
    transform: rotate(65deg);
    clip: rect(0px 100px 200px 0px);
    position: absolute;
}
.d1::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    background: #fff;
    border-radius: 55%;
    top: 64px;
    left: 32px;
}
.d1 {
    -webkit-animation: we .3s ease-in-out infinite alternate;
    animation: we .3s ease-in-out infinite alternate;
}
.d2 {
    transform: rotate(-65deg);
    clip: rect(0px 102px 200px 0px);
    -webkit-animation: we2 .3s ease-in-out infinite alternate;
    animation: we2 .3s ease-in-out infinite alternate;
}
.i1 {
    padding: 5px 10px;
    margin: 30px 0;
}
@-webkit-keyframes we {
    0% {
        transform: rotate(48deg);
    }
    100% {
        transform: rotate(88deg);
    }
}
@keyframes we {
    0% {
        transform: rotate(48deg);
    }
    100% {
        transform: rotate(88deg);
    }
}
@-webkit-keyframes we2 {
    0% {
        transform: rotate(-45deg);
    }
    100% {
        transform: rotate(-93deg);
    }
}
@keyframes we2 {
    0% {
        transform: rotate(-45deg);
    }
    100% {
        transform: rotate(-93deg);
    }
}
</style>
<body>
<div class="wrapper">
    <div class="d1"></div>
    <div class="d2"></div> 
</div>
</body>
</html>